Kaixin001 (开心网) is a Chinese social networking website launched in March 2008 by founder Cheng Bingao, a former senior executive at Sina. It rose to mass popularity in 2009-2010 on the back of viral social games such as "Friends for Sale" and "Parking Wars" before losing ground to Renren, Sina Weibo, and WeChat.
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Updated
Aug 4, 2026